GMD NEWS RELEASE, JUNE 19, 2000
Suite 1650 - 999 West Hastings Street, Vancouver British Columbia V6C 2W2
Telephone: (604) 662-3350 Facsimile: (604) 669-1605Toll Free: 1-800-808-3350 E-mail: gmdgeo@portal.ca
CDNX Symbol - "GMD"
U.S. 12g3 Exemption #82-4071
News Release No. 227
Royce Group Diamond Project, NWT - Update
GMD Resource Corp. (the "Company") reports that it has received from Monopros Limited all of the data picked for kimberlitic indicator minerals from the 1143 till samples collected in 1999 as well as probe data from 943 of the 1143 samples collected on the Royce Group Diamond Property situated 150 km north northwest of Yellowknife, NWT. Monopros Limited is the operator of the property. Monopros may earn a 51% interest in the property by incurring not less than $16,000,000.00 in four sequential programs by April 30, 2004.
The chemistry data base has identified eleven (11) indicator mineral trains on the Royce Group Diamond property. The data base has a firm foundation and confidence level, incorporating both probe confirmed kimberlitic chemistries and indicator mineral surface texture such as kelphytic rims and perovskite mantles. These delicate textures do not survive transport well in a glacial environment and can be used to help estimate grain transport distances.
The 1999 sampling of a portion of the Royce property by Monopros was also successful in reproducing data collected and compiled by GMD during the years of 1995 through 1998, prior to the formation of the joint venture with Monopros. Indicator mineral chemistry and location of indicator mineral dispersion trains with high total counts of indicator grains has been confirmed and further refined as a result of this program.
Plots of chemical relationships for pyrope garnet, eclogitic garnet, picroilmenite, clinopyroxene (chrome diopside) and chrome spinel from the 1999 sampling program illustrate exact trends as were developed from the previous sampling.
Areas sampled prior to 1999 which produced anomalous samples with respect to the number of probe-confirmed grains per sample also showed the recurrence of these anomalies with the Monopros sampling.
High chrome ilmenite ( Cr2O3 >12.5 weight % ) has been recovered from the 1999 sampling. This is anomalous for any exploration program and resembles ilmenite chemistries from the developing mines in the Lac de Gras camp. Plotting of high chrome ilmenite (those with Cr2O3 > 3 weight % ) from the 1999 samples produces distinct ilmenite dispersion trains which correspond exactly with a dispersion train of garnet, clinopyroxene and chrome spinel.
Both eclogitic garnet and chrome spinel from the 1999 sampling show numerous grains that fall well within the diamond inclusion field when plotted on their respective graphs.
The identified eleven indicator mineral trains can be divided into three categories each of which lie in a specific region of the Royce Group of claims.
Category 1 is composed of 2 small trains identified prior to the 1999 program. These trains lie in the southwestern portion of the property and are composed of primarily pyrope garnet with minor clinopyroxene. Ilmenite is absent in these trains. Both trains contain J7 garnets. Good quality glacial till is difficult to find in this region of the property, which is characterized predominantly by large areas of outcrop and swampy low lands. Detailed surficial mapping will be conducted up ice of these developing trains to identify suitable sampling material.
Category 2 indicator trains are restricted to the northeast quadrant of the property. There are four developing indicator mineral trains which consist of predominantly ilmenite. There is a significant proportion of the ilmenite grains which have perovskite mantle. These Category 2 trains are distinguished from Category 3 by their significantly lower ilmenite counts, lack of garnets and frequent occurrence of perovskite mantle per ilmenite population. This region of the property is mapped as general glacial wash. Follow up sampling will be restricted to zones of lesser disturbed glacial till.
Category 3 occurs in the southeastern area of the property. These 5 indicator mineral trains are typified by an abundance of ilmenite as well as moderate counts of garnet and chrome rich spinels. High total counts containing multiple kimberlitic indicator species separate these trains from Category 1 and 2. Total counts between 10 and 30 are common and range as high as 60 probe confirmed indicators per sample. The large previously identified indicator train in this region has been further refined into 2 parallel trains, one of which has a cut off fence of negative samples several kilometers up ice. Detailed sampling within the larger train has identified a narrower train with elevated counts, previously unnoticed.
The Phase 2 program (May 2000 - April 2001) which will start with the collection of up to 1,500 till samples is scheduled to commence in late June, 2000. Detailed surficial mapping will also be conducted to assist in the definition of the up ice limitations of the various trains. The chemistry results from the 2000 summer till sampling program will help define anomaly specific detailed airborne surveys which will be conducted next winter with drilling to follow upon target selection.
Monopros and the Company are encouraged by the number of developing indicator trains and the kimberlite chemistries contained within the various trains.
For further information please contact Investor Relations at (604) 669-6619 or 1-800-808-3350.
GMD RESOURCE CORP.
"Rodney N. Duncan"
Rodney N. Duncan
President
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